CN103632474A - Sound pressure sensor and alarm method thereof - Google Patents
Sound pressure sensor and alarm method thereof Download PDFInfo
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- CN103632474A CN103632474A CN201310598320.7A CN201310598320A CN103632474A CN 103632474 A CN103632474 A CN 103632474A CN 201310598320 A CN201310598320 A CN 201310598320A CN 103632474 A CN103632474 A CN 103632474A
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Abstract
The invention relates to a sound pressure sensor and an alarm method thereof. The alarm method comprises the steps of inputting an audio frequency signal of a monitoring area; processing the audio frequency signal; calculating the sound decibel value corresponding to the audio frequency signal after the audio frequency signal is sampled for multiple times; determining whether an alarm signal is output according to the size of the sound decibel value. The corresponding sound decibel value is calculated by collecting the audio frequency signal in the monitoring area, and whether the alarm signal is outputted or not is determined according to the sound decibel value, so the use efficiency of a monitoring system is effectively improved, emergencies possibly occurring to sensitive areas such as a self-help bank and a vault at night or in high-risk period are effectively prevented and safety of personnel and equipment is guaranteed.
Description
Technical field
The present invention relates to inductor field, relate in particular to a kind of acoustic pressure inductor and alarm method thereof.
Background technology
The large problem that safety-security area exists is at present exactly warning function deficiency, conventionally can only after accident occurs, carry out follow-up analysis.Even if found out reason, loss often also cannot make up.
For video monitoring, main employing be take DVR as main centralized monitoring system at present, and video camera ，You Surveillance center Centralized Monitoring is generally installed in emergent place.The number of cameras that a lot of Surveillance center connect is too much, thousands of of possible as many as, and operator on duty does not often have ability and energy to supervise each picture.Video analysis software is applied in only a few Surveillance center as supplementary means, but the current shortcomings such as function imperfection, wrong report rate of failing to report height that exist cannot effectively improve video monitoring efficiency.Therefore, once emergent place goes wrong, often cannot solve in time, run into emergency condition and seek help especially without door.
For Voice Surveillance, mainly by acoustic pickup, the sound of guarded region is recorded at present, but because monitoring place is too much, sound is not carried out to real-time listening.Scene is sent abnormal sound and can not timely monitored system be identified and report to the police, for example victim's sound of call for help or the sound of breaking to the equipment of withdrawing the money.Another kind of monitor mode is to engage in the dialogue by intercom and scene, such as, when seeking help person presses the button of seeking help, Surveillance center has alarm and ejects video, and operator on duty can converse and give a hand with seeking help person.Yet when there is incident of violence, ruffian may destroy intercom.Moreover seeking help person can be because can use intercom and cannot not get help, or can use intercom but chaotic under the pressure of ruffian's threat or prevailing circumstances, and be difficult to use intercom to be sought help.Up to now, not yet there is the case of utilizing intercom to report to the police.
For alarm monitoring, mainly by infrared or two mirror alarms, emergent place personnel are come in and gone out and monitored at present, by vibrations alarm, the equipment of withdrawing the money is monitored.But infrared or two mirror alarms can only be identified personnel's turnover and movement, cannot distinguish normal and abnormal conditions.Vibrations alarm is only reported to the police to meeting the vibrations of certain dynamics and frequency, and the vibrations that cannot not meet to breaking the device display screen of withdrawing the money etc. alert if are reported to the police.Therefore alarm is to be more applied in to have judged whether people, rather than is applied in abnormal conditions are reported to the police.
In sum, how to realize real-time monitoring, abnormal conditions are reported to the police in time, become " following the trail of " is " obviate " afterwards, becomes security protection industry problem demanding prompt solution.
Also find no at present the Related product that audio frequency is carried out to real-time monitoring alarm.
Summary of the invention
Object of the present invention is intended to solve and in prior art, has the problem of warning function deficiency in advance, thereby a kind of acoustic pressure inductor and alarm method thereof are provided.
In first aspect, the invention provides a kind of alarm method of acoustic pressure inductor.The method comprises: the sound signal in input monitoring region; Described sound signal is processed; Described sound signal is repeatedly sampled, calculate the sound decibel value corresponding with described sound signal; Size according to described sound decibel value, determines whether output alarm signal.
In second aspect, the present invention also provides a kind of acoustic pressure inductor for reporting to the police.This acoustic pressure inductor comprises: sound signal load module, for the sound signal in input monitoring region; Audio-frequency signal processing module, sends into microprocessor for described sound signal is carried out after relevant treatment again; And microprocessor, for calculating sound decibel value corresponding to described sound signal, and determine whether output alarm signal according to sound decibel value.
The present invention is by the sound signal in acquisition monitoring region, according to sound signal, calculate corresponding sound decibel value, according to the decibel value of sound, determine whether output alarm signal again, can effectively improve the effective utilization of supervisory system, effectively take precautions against the sensitizing ranges such as self-help bank, national treasury in the accident that night or high-risk period may occur, ensure personal device security.
Accompanying drawing explanation
Fig. 1 is the acoustic pressure inductor circuit schematic diagram for reporting to the police according to the embodiment of the present invention;
Fig. 2 is the acoustic pressure sensor structure block diagram for reporting to the police according to the embodiment of the present invention; And
Fig. 3 is according to the alarm method process flow diagram of the acoustic pressure inductor of the embodiment of the present invention.
Embodiment
In order to make those skilled in the art person better understand the technical scheme in the embodiment of the present invention, and the above-mentioned purpose of the embodiment of the present invention, feature and advantage can be become apparent more, below by drawings and Examples, technical scheme of the present invention is described in further detail.Obviously, described embodiment is only the present invention's one circuit embodiments, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the acoustic pressure inductor circuit schematic diagram for reporting to the police according to the embodiment of the present invention.
As shown in Figure 1, the circuit theory diagrams of this embodiment comprise that power suppling part divides, induced signal input end, audio signal input end, sound signal place part, single-chip microcomputer, button arrange part, warning output and charactron display section.
Power suppling part divides and comprises+12V power supply, anti-reversed polarity diode D1, linear stabilized power supply U2 and linear stabilized power supply U3.Linear stabilized power supply has the advantages such as output voltage ripple is little, noise is low, wide input voltage range, and has overcurrent, overheated and reversal connection protection function.The positive pole of anti-reversed polarity diode D1 is connected with power supply+12V power positive end, and negative pole is connected with the input end of linear stabilized power supply U2, U3.+ 12V power supply by diode D1 after a minute two-way ，Yi road connect linear stabilized power supply U2， mono-tunnel and meet linear stabilized power supply U3, linear stabilized power supply U2 adopts 7805, linear stabilized power supply U3 adopts 7809, then produce stable+5V and+voltage of 9V.Linear stabilized power supply U2 is used for driving single-chip microcomputer U1, button U5, relay U7, charactron U6 and light emitting diode D2, D3.Linear stabilized power supply U3 is used to audio frequency processing circuit power supply, and+9V voltage is connected after dividing potential drop through resistance R 4 and R5, the voltage supply audio frequency treatment circuit of generation+4.5V.Those of ordinary skill in the art should be appreciated that power suppling part divides the mu balanced circuit that can also take other type.
Connecting resistance R1 mono-pin in induced signal input end, joins through resistance R 1 another pin and single-chip microcomputer one pin, for the induced signal detecting is inputted to single-chip microcomputer.Induced signal input end can external intrusion detector or relay, and then obtains the induced signal of guarded region.Single-chip microcomputer obtains after induced signal, and corresponding control signal, after resistance R 2, is lighted to light emitting diode D2, and indication acoustic pressure inductor moves.
In audio signal input end, connect the inverting input of operational amplifier in audio signal processing circuit, for the sound signal collecting is sent into audio frequency processing circuit.Can external active acoustic pickup or passive acoustic pickup, and then gather sound signal.
Audio signal processing circuit comprises operational amplifier, for the sound signal collecting being carried out to filtering, every straight, decay and migration processing, makes monolithic function adopt signal accurately.Because the sample range of Chip Microcomputer A/D is 0-5V, and the sound signal of input contains negative value, so the DC component that needs to superpose before sampling.Be about to linear stabilized power supply U2+9V voltage is through resistance R 4 and R5 series connection dividing potential drop, with voltage follower, output+4.5V does offset voltage, send into the in-phase input end of operational amplifier, the acoustic pickup of inverting input and audio signal sample circuit joins, and output terminal and single-chip microcomputer one pin join.
Single-chip microcomputer is used for receiving induced signal and sound signal, and produces drive control signal according to induced signal and sound signal, and single-chip microcomputer is stored in E by the alarm threshold value of setting in advance
2in prom memory.When induced signal testing circuit detects guarded region and has induced signal, single-chip microcomputer is lighted light emitting diode D2, control the collection that audio signal sample device carries out sound signal simultaneously, the sound signal collecting is sent into single-chip microcomputer after audio signal processor is processed again, single-chip microcomputer is repeatedly sampled to the sound signal of input, according to the theoretical formula of sound pressure level, calculate sound decibel value corresponding to sound signal, if the sound decibel value drawing surpasses E
2the alarm threshold value of setting in prom memory, single-chip microcomputer output alarm control signal, pilot relay U7 adhesive, lights light emitting diode D3, indication warning state.
Button arranges a series of function setting that part can complete acoustic pressure inductor, while powering on, the input type (Chang Kai or normally closed) of alarm threshold value, charactron displaying time, alerting signal duration (relay retention time), acoustic pickup access style (active acoustic pickup or passive acoustic pickup) and induced signal is set by button.Arranged, single-chip microcomputer is stored in E by the information of setting automatically at every turn
2in prom memory, even power-off, configuration information can not lost yet.
Warning output comprises relay U7, triode Q1, resistance R 3 and light emitting diode D3, and relay U7 contact capacity is 1A@30VDC, and normal battle and normally closed point are provided simultaneously, and by light emitting diode D3 indication warning state.Also can meet bulb, alarm host machine, DVR etc. and carry out alarm linkage.Triode Q1 is for amplifying the current signal of single-chip microcomputer U1 output, to drive relay U7.A pin of the base stage of triode Q1 and single-chip microcomputer U7 joins, for receiving the alerting signal of single-chip microcomputer output, and grounded emitter, a pin of collector and relay U7 joins.
Charactron display section comprises charactron U6, joins, for show state and configuration information with single-chip microcomputer one pin.
Fig. 2 is the acoustic pressure sensor structure block diagram for reporting to the police according to the embodiment of the present invention.
As shown in Figure 2, this acoustic pressure inductor comprises that power supply supplying module, microprocessor, induced signal load module, sound signal load module, audio-frequency signal processing module, button arrange module, alarm output module and charactron display module.Wherein, induced signal load module, audio-frequency signal processing module, button arrange module, alarm output module and charactron display module and join respectively at processor, and sound signal load module and audio-frequency signal processing module join.
During the work of acoustic pressure inductor, first by button, module is set and carries out series of parameters setting, as the displaying time of alarm threshold value, charactron display module is set, the acoustic pickup type of the relay retention time of alarm output module, sound signal access module and the signal input type of induced signal load module (Chang Kai or normally closed).Arranged at every turn, automatically the information of setting has been stored in to E
2in prom memory, even power-off, configuration information can not lost yet.After induced signal load module input induced signal, microprocessor is controlled the acoustic pickup external with sound signal load module and is carried out the collection of sound signal, by sound signal load module, sound signal is sent into audio-frequency signal processing module, audio-frequency signal processing module carries out sound signal filtering, after the processing such as straight, decay and skew, is sending into microprocessor, microprocessor is repeatedly sampled to the sound signal receiving, and calculates sound decibel value according to the theoretical calculation formula of sound pressure level.If the sound decibel value drawing is greater than microprocessor E
2in prom memory, during default alarm threshold value, alerting signal is sent into alarm output module, by the alarm output module indication of reporting to the police.
Fig. 3 is according to the alarm method process flow diagram of the acoustic pressure inductor of the embodiment of the present invention.
In step 301, the sound signal in input monitoring region wherein, also comprised before the sound signal in input monitoring region: determined whether induced signal input, if having, carried out the collection of sound signal, if nothing is not carried out audio signal sample.
In step 302, the sound signal that step 301 is inputted is carried out filtering, after straight, decay and migration processing, is sent into microprocessor.
In step 303, the sound signal of the input in step 302 is repeatedly sampled, calculate the sound decibel value corresponding with described sound signal.
In step 304, the size according to the decibel value of sound described in step 303, determines whether output alarm signal.If sound decibel value is greater than alarm threshold value, the indication of reporting to the police.
Professional should further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically-programmable memory (EPROM), electric erasable programmable memory device (E
2pROM), in the storage medium of interior known any other form of hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. an alarm method for acoustic pressure inductor, is characterized in that, comprises the following steps:
The sound signal in input monitoring region;
Described sound signal is processed;
After described sound signal is repeatedly sampled, calculate the sound decibel value corresponding with described sound signal;
Size according to described sound decibel value, determines whether output alarm signal.
2. method according to claim 1, is characterized in that, describedly before the sound signal in input monitoring region, also comprises: determined whether induced signal input, if having, carried out the collection of sound signal, if nothing is not carried out audio signal sample.
3. method according to claim 1, is characterized in that, described sound signal is processed specifically and comprised: by sound signal carry out filtering, every straight, decay and migration processing, so that microprocessor obtains signal accurately.
4. method according to claim 1, is characterized in that, described in when calculating sound decibel value and being greater than default alarm threshold value, output alarm signal, and by LED lamp indication warning state.
5. the acoustic pressure inductor for reporting to the police, is characterized in that, comprising:
Sound signal load module, for the sound signal in input monitoring region;
Audio-frequency signal processing module, sends into microprocessor for described sound signal is carried out after relevant treatment again; And
Microprocessor, for calculating sound decibel value corresponding to described sound signal, and determines whether output alarm signal according to sound decibel value.
6. acoustic pressure inductor according to claim 5, is characterized in that, also comprises induced signal load module, for the induced signal in input monitoring region, so that whether microprocessor determines the calculating of sampling of the sound signal of input.
7. acoustic pressure inductor according to claim 6, is characterized in that, the external intrusion detector of described induced signal load module or relay.
8. acoustic pressure inductor according to claim 5, is characterized in that, the external active acoustic pickup of described sound signal load module or passive acoustic pickup.
9. acoustic pressure inductor according to claim 5, is characterized in that, described audio-frequency signal processing module comprises operational amplifier, for described sound signal being carried out to filtering, every straight, decay and migration processing, so that microprocessor obtains signal accurately.
10. acoustic pressure inductor according to claim 5, is characterized in that, also comprises charactron display module, for show state and configuration information.
11. acoustic pressure inductors according to claim 5, is characterized in that, also comprise alarm output module, for the output of reporting to the police.
12. acoustic pressure inductors according to claim 5, is characterized in that, also comprise that button arranges module, for the input type of alarm threshold value, charactron displaying time, warning duration, acoustic pickup access style and induced signal is set.
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| CN105069863A (en) * | 2015-07-07 | 2015-11-18 | 合肥指南针电子科技有限责任公司 | Safety access system for police prison |
| CN105262998A (en) * | 2015-10-15 | 2016-01-20 | 于璐菁 | Examination monitoring system and examination monitoring method |
| WO2018018217A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel alerting method and alerting system |
| WO2018018220A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for calling hotel security guard and calling system |
| WO2018018219A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing patent information during voiced controlled alarming and alerting system |
| WO2018018224A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for acquiring hotel monitoring data and monitoring system |
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| WO2018018225A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing patent information during monitoring, and monitoring system |
| WO2018018222A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing information during hotel security guard calling and calling system |
| WO2018018221A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Data acquisition method for hotel security technology and calling system |
| WO2018018179A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing information during hotel network monitoring and network monitoring system |
| WO2018018180A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel network monitoring method and network monitoring system |
| WO2018018178A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel network monitoring data acquisition method and network monitoring system |
| CN108833555A (en) * | 2018-06-22 | 2018-11-16 | 陈洪国 | Decibel numerical value cloud processing mechanism |
| CN109637063A (en) * | 2018-11-23 | 2019-04-16 | 沈新泉 | Acoustic control images security system |
| CN110176124A (en) * | 2019-05-27 | 2019-08-27 | 杭州安存环保科技有限公司 | A kind of robot having warning function and its early warning system |
| CN111147738A (en) * | 2019-12-19 | 2020-05-12 | 武汉裕众信息科技有限公司 | Police vehicle-mounted panoramic and coma system, device, electronic equipment and medium |
| CN111986681A (en) * | 2020-08-31 | 2020-11-24 | 贵州乐诚技术有限公司 | Warehouse supervision management system |
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| CN105069863A (en) * | 2015-07-07 | 2015-11-18 | 合肥指南针电子科技有限责任公司 | Safety access system for police prison |
| CN105262998A (en) * | 2015-10-15 | 2016-01-20 | 于璐菁 | Examination monitoring system and examination monitoring method |
| WO2018018217A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel alerting method and alerting system |
| WO2018018220A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for calling hotel security guard and calling system |
| WO2018018219A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing patent information during voiced controlled alarming and alerting system |
| WO2018018224A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for acquiring hotel monitoring data and monitoring system |
| WO2018018223A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Display method of hotel monitor and monitoring system |
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| WO2018018225A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing patent information during monitoring, and monitoring system |
| WO2018018222A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing information during hotel security guard calling and calling system |
| WO2018018221A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Data acquisition method for hotel security technology and calling system |
| WO2018018179A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Method for pushing information during hotel network monitoring and network monitoring system |
| WO2018018180A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel network monitoring method and network monitoring system |
| WO2018018178A1 (en) * | 2016-07-24 | 2018-02-01 | 严映军 | Hotel network monitoring data acquisition method and network monitoring system |
| CN108833555A (en) * | 2018-06-22 | 2018-11-16 | 陈洪国 | Decibel numerical value cloud processing mechanism |
| CN108833555B (en) * | 2018-06-22 | 2019-04-02 | 仲恺农业工程学院 | Decibel numerical value cloud processing mechanism |
| CN109637063A (en) * | 2018-11-23 | 2019-04-16 | 沈新泉 | Acoustic control images security system |
| CN110176124A (en) * | 2019-05-27 | 2019-08-27 | 杭州安存环保科技有限公司 | A kind of robot having warning function and its early warning system |
| CN111147738A (en) * | 2019-12-19 | 2020-05-12 | 武汉裕众信息科技有限公司 | Police vehicle-mounted panoramic and coma system, device, electronic equipment and medium |
| CN111986681A (en) * | 2020-08-31 | 2020-11-24 | 贵州乐诚技术有限公司 | Warehouse supervision management system |
| CN111986681B (en) * | 2020-08-31 | 2023-03-10 | 贵州乐诚技术有限公司 | Warehouse supervision management system |
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Application publication date: 20140312 |